Ventilator cap



`vMay 17, 1949. J, w, K|CE 2,470,623

VENTILATOR CAP Filed July 11, 1947 2 shets-Sheet 1 'o v N N Ln y v 'n O 1"\ E 1m1- E:

l l qu g l L i L @l E U U d m t9' U w E E E Q a @l5 u U o. w JACK w. Klee E i lNvENToR ATTORN EY May 17, 1949. J. w. KlcE 2,470,623

vENTILAToR GAP Filed July 11, 1947 2 Sheets-Sheet 2 FIGS JACK W. K l C E INVENTOR.

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Patentecl May 17, 1949 VENTILATOR CAP Jack W. Kice, Wichita, Kans., assignor to The Coleman Company, Inc., Wichita, Kans.

Application lIuly 11, 1947, Serial No. 760,480

2 Claims.

This invention relates to ventilators for installation on the exterior ends of vertical ventilating pipes. The particular invention which is the subject of this application will be referred to herein as a Vent cap.

It is the chief object of the invention to provide a highly simpliied and low cost construction for a highly eicient vent cap.

It is an additional object of the invention to provide a vent cap which is particularly adapted for use in connection with a gas burning heating unit.

It is another object of the invention to provide a vent cap which will positively prevent a gust of wind from entering the upper end ofthe ventilating pipe and passing downward through pipe to put out the gas burner flame, thus endangering the lives of the occupants of the building.

The details in the construction of a preferred form of the invention, together with other objects, will be better understood from the following description when it is read in connection with the accompanying drawings, which were chosen for illustrative purposes only, and in which:

Figure 1 is a ilat pattern of the main body of a preferred form of vent cap embodying the invention;

Figure 2 is a side View of this body showing certain of its parts bent into assembly position;

Figure 3 is a fiat pattern of a shield which is a part of the assembled vent cap;

Figure 4 is a side view of an assembled vent cap embodying the invention;

Figure 5 is a horizontal sectional view taken along the line 5 5 of Figure 4; and

Figure 6 is an isometric view of one-half of the vent cap of Figure 4, the cut being made along the line 5--6 of Figure 5.

Referring to the drawings it will be seen that the vent cap, shown assembled, in Figure 4, includes only 4 primary parts, i. e., a cylindrical shell or body I0, two identical cylindrical shields II and I2, somewhat larger in diameter than the body Il), and a dished cap I3.

The body I0 is stamped from a at sheet of metal as shown in Figures 1 and 2. Cuts are made along the solid lines of Figure 1, and bends are subsequently made along the broken lines, as shown in Figure 2. The same is true of the shields II and I2, a iat pattern of which is shown in Figure 3. Shield supporting brackets I4 are spaced radially so that their tongues I5 may be inserted into the slots I6 of the shields I I and I2, as shown clearly in Figure 5. The perorated ears I'l and I8, and the perforations I9 and 2U serve as the means for holding the body I0 in cylindrical form. The cap I3 is formed by means of a draw die from a fiat sheet.

To assemble the vent cap the blank stamped body ID is manually bent into cylindrical form with ends overlapped, and a bolt 2| is inserted through the perforations in the ears I1 and I8. A nut 22 is then screwed loosely on the bolt. The cap I3 is then placed in position on the upper end of the cylindrical body, and a metal screw 23 is screwed into a perforation in the side wall of the cap and through the perforations I9 and 2li, thus serving to hold the upper end of the body in iixed form while simultaneously aiding in anchoring the cap I3 in position. An additional metal screw (not shown) passes through another perforation in the side wall of the cap I3 and through the perforation 24 in the body I0 to complete anchorage of the cap.

Next, the shields II and I2 are manually bent into cylindrical form with their ends overlapping slightly, the plain end 25 passing into the spaced open slots 26 and 21 of the other end, as clearly shown in Figures 4 and 5. The tongues I5 of the brackets I4 are inserted into the slots I6 as the shields are bent into form, and the protruding ends of the tongues I5 are then bent to lie along the outer surface of each shield, as shown. Each shield is thus anchored to its respective brackets I4, and is in turn held by the brackets in spaced radial relation to the body Il), and in a position to block the entry of wind gusts into the vent openings 28. Since assembly of this Vent cap is very easy, requiring no tools save a screw driver, it may be shipped disassembled if desired, and subsequently assembled either by the dealer, or by the one who installs it.

To install the assembled vent cap, it is only necessary to slip the lower end of the body I0 over a ventilator pipe 29, and then tighten the nut 22, the lower end of the body I0 thus acting as a clamp to hold the entire vent cap rigidly in place.

In operation, fumes passing upward through the vent pipe 29 are free to emerge through the shielded vent openings 28 and into the atmosphere through the space between the shields II and I2 and the body I0. Regardless of the direction of exterior wind or wind gusts, it is not possible for wind to blow downward into the pipe 29, Nor can upward or downward gusts passing through the space between the shields and the body IIl prevent fumes from emerging through the vent openings 28. In tact, such gusts actually aid the escape of fumes by creating an outward draft through these vent openings.

Having described a preferred embodiment of the invention, what I desire to claim and to protect by Letters Patent, is:

1. A vent cap comprising: an inner shell formed by bending a flat sheet of material into substantially cylindrical form with the ends of the sheet over-lapped; a cap closing one end of the formed shell and adapted to aid in holding the ends of the sheet in overlapped relation; perforated outwardly projecting ears, one out from each overlapped end of the sheet; a bolt through the perforations in said ears; `a nutronfthe bolt for rigidly clamping the open-end'oi Isaid shell in operating position on the-'.Qpen'f-end ofra Vent pipe; circumferentially spaced outwardly projecting brackets cut from the material of said sheet; a vent opening in the-:shell between each adja- `scentfpair?ofzsaiilfbrackets; and a-shield forsaid '-:vent:openings-supported in spaced concentric relation to thednnerfshellfby the outer ends'` of'said :brackets, ysaid shieldr-alsoibeing formed by bendaing arrat-sheetaof' material into substantially .;cylindricalformlwiththe ends of the sheet over- .ilapped andfhaving perforations i f or receiving the outerv` ends ofsaidbrackets, at least one of said ibracketslhaving. f-itsqouter endpassed through the .foverlapped endszof ttheishield.

12. 5A Ventffcap 'mmprising: -an inner shell 'formed :from raflatvsheet fof Ymaterial fbent -into zwar'dlyfromisaid innershell; a'vent opening in the shell between each adjacent pair of said brackets; and a shield for said vent openings Sup- 1 ported in spaced concentric relation to the inner Mvshellby the outer ends of said brackets, said shield also being formed by bending a at Sheet of vmaterial into fsubstantially cylindrical form with the endsof the sheet overlapped, and hav- `ving perforations for receiving the outer ends of said brackets, at least one of said brackets hav- `ing its outer end passed through the overlapped ends of the shield.

JACK W. KICE.

.REFERENCES .CITED The ,following :references f are of record in Ithe le of this patent:

UNITED STATES PATENTS Number Name yDate y876,972 Kellhofer Jan. 21, 11908 `:941,668 Williams Nov. 30, `1909 1,509,996 Elting ISept. BU, 19.24 2,295,669 Laws Sept. 15, 1942 '25376-5642 `llatermanfet al. May.22, 21945 

